Why would someone want to buy this book?

A real email. I googled “How to sue telemarketers”. I recently had a confrontation with a telemarketer who repeatedly called me and refused to take me off his list until I listened to his entire sell. I didn’t, I got very angry over his attempt to blackmail me and I handled the situation poorly. I felt I needed to know how to shut people like him down. Only political callers now, should be over in a week, but I anticipate future telemarketer callers, as many companies intentionally violate the “Do Not Call” list.
Thanks,